<?
authorize();

$ThreadID = $_POST['threadid'];
$NewOption = $_POST['new_option'];

if (!is_number($ThreadID)) {
    error(404);
}
if (!check_perms('site_moderate_forums')) {
    $DB->query("
		SELECT ForumID
		FROM forums_topics
		WHERE ID = $ThreadID");
    list($ForumID) = $DB->next_record();
    if (!in_array($ForumID, $CONFIG['ForumsRevealVoters'])) {
        error(403);
    }
}
$DB->query("
	SELECT Answers
	FROM forums_polls
	WHERE TopicID = $ThreadID");
if (!$DB->has_results()) {
    error(404);
}

list($Answers) = $DB->next_record(MYSQLI_NUM, false);
$Answers = unserialize($Answers);
$Answers[] = $NewOption;
$Answers = serialize($Answers);

$DB->query("
	UPDATE forums_polls
	SET Answers = '" . db_string($Answers) . "'
	WHERE TopicID = $ThreadID");
$Cache->delete_value("polls_$ThreadID");

header("Location: forums.php?action=viewthread&threadid=$ThreadID");
